How many covalent bonds join the atoms in a molecule of ammonia (nh3) ?

How are scientists so sure that earthquakes happen the way they do?

Boom! Boom! Boom! The car passed Steve's house and the blaring music from the car's radio rattled the windows. How would a scientist explain this to Steve? A) Sound waves reflected off of the windows of the house.

Why is water a good solvent

1 L = 1000 mL what is 375 expressed in litters

The process that converts light energy from the sun to chemical energy stored in glucose is called aerobic respiration. photosynthesis. anaerobic respiration. fermentation.

What is a group of elements that form salts called

Which number represents an acidic pH, 4 or 9?

What would make the risk of these cancers even worse for someone who drinks alcohol?

For what reasons would modern scientists accept dalton's atomic theory but not the idea of an atom proposed by the greek philosophers?

Which physical method can be used for obtaining a sample of salt from a small beaker of salt water? boiling freezing chromatography sorting